Tag Archives: Jun2008

Write a program in 8086 assembly Ianguage that accepts a character string, of maximum 10 characters, from the keyboard, converts each character of string to upper case and converts each character to the next character. i.e. A to B, B to C,and so on. Finally display the string on the screen. 7m Jun2008 DATA… Read More »

Explain the working of DVD-ROM with the help of block diagram. 4m Jun2008 CD-ROM and DVD-ROM Optical disks use Laser Disk Technology, which is the latest, and the most promising technology for high capacity secondary storage. The advent of the compact disk digital audio system, a non-erasable optical disk, paved the way for the… Read More »

Explain the operation of a micro programmed control unit with the help of a diagram. 8m Jun2008 THE MICRO-PROGRAMMED CONTROL The logic of the control unit is specified by a micro-program. A micro-program is also called firmware (midway between the hardware and the software). It consists of: (a) One or more micro-operations to be… Read More »

Draw the state table and the logic circuit for a 3-bit binary counter using D flipflop. 5m Jun2008 Binary counter A digital circuit which has a clock input and a number of count outputs which give the number of clock cycles. The output may change either on rising or falling clock edges. The circuit may… Read More »

Give block diagram of DMA controller. How does the CPU initialize the DMA transfer? 5m Jun2008 Device Controller A device controller need not necessarily control a single device. It can usually control multiple I/O devices. It comes in the form of an electronic circuit board that plugs directly into the system bus, and there is… Read More »

Explain briefly the working of two-pass assembler. 5m Jun2008 Two-pass assembler: Assemblers typically make two or more passes through a source program in order to resolve forward references in a program. A forward reference is defined as a type of instruction in the code segment that is referencing the label of an instruction, but… Read More »

Draw logic circuit for a converter that converts 4 bit binary input to its equivalent BCD number. 8m Jun2008 A four bit number can be any number value between 0 to 15 i.e. 0 to F in Hexadecimal. BCD is a number which is represented in binary as a decimal number hence it can have… Read More »

Write an 8086 assembly language program that finds the smallest and the second smallest number from a list of 10 numbers stored in memory. 7m Jun2008 To understand program for Largest or Smallest in an array in detail Please Click this link below http://cssimplified.com/computer-organisation-and-assembly-language-programming/an-assembly-program-for-finding-the-largest-number-in-array-of-10-elements DATA SEGMENT ARR DB 5,3,7,1,9,2,6,8,4 LEN DW $-ARR SMALL DB ? SECOND… Read More »